Exploiting Object Relationships for More Deterministic Management of Distributed Objects

缓存和复制Internet和万维网上的对象是经常使用的技术，用于减少客户端访问这些对象的延迟，同时减少网络和服务器负载。这项工作研究了管理对象的可能性，其中服务器向客户端缓存提供更完整的信息，并使用这些信息来管理复制的内容。我们的想法是利用复合对象，它将一组不同的对象组合在一起，其中每个对象都具有统一的类型和更改特征。这些对象之间的关系可以在服务器上“编译”成服务器可以传递给客户端的信息。这些信息的范围从缓存/复制对象列表的显式过期时间到基于大量相关对象中的对象成员资格的失效。将使用由不同类型和关系的对象组成的客户端/服务器环境来测试该方法。预计它将产生更有效、更可预测的缓存以及驱动器放置和删除复制内容，特别是在与客户端访问计数结合使用时。这项工作将产生持续的影响，因为分布式对象环境的规模不断扩大，组合在一起并提供服务的对象类型日益多样化。

Caching and replication of objects on the Internet and the World Wide Web are frequently used techniques to reduce latencies for clients accessing these objects while reducing network and server load. This work investigates the potential of managing objects where servers supply more complete information to client caches and use the information to manage replicated content. The idea is to exploit composite objects, which group a set of distinct objects where each object has a uniform type and change characteristic. Relationships between these objects can be "compiled" at a server into information that the server can pass to clients. Such information ranges from explicit expiration times for caching/replicating a list of objects to invalidations based on the object membership in a volume of related objects.A client/server environment consisting of objects with different types and relationships will be used to test the approach. It is expected to yield more effective and predictable caching as well as drive placement and removal of replicated content, particularly when combined with client access counts. The work will have continued impact as distributed object environments continue to grow in size with increasing diversity in the type of objects grouped together and served.